The most intelligent men, like the strongest, find their happiness where others would find only disaster: in the labyrinth, in being hard with themselves and with others, in effort; their delight is self-mastery; in them asceticism becomes second nature, a necessity, as instinct.

Political writings of Friedrich Nietzsche: an edited anthology (ed. Palgrave MacMillan, 2008) - ISBN: 9780230537729